Abstract
Abstract - The aim of this study is to assess thermal hazards of polystyrene polymerization process by bulk polymerization with accelerating rate calorimeter(ARC) and Multimax reactor system(MM). From this study, we found out that the polymerization process should be operated at reaction temperature of 120 ℃ ~ 130 ℃. At reaction temperature over 130 ℃, there was a runaway reaction hazard due to the temperature control failure following a viscosity increase of reaction products. With a cooling failure of a reactor in the early stage of process operation at the reaction temperature (120℃ ~ 130 ℃), there was a high thermal hazard of burst of a reactor's rupture disk or explosion of a reactor caused by the rapid rise of temperature and pressure to 340 ℃, 5.3 bar respectively within 30 - 50 minutes.Key words : polystyrene polymerization process, thermal hazard, cooling failure, reaction temperature, runaway reaction, TMR 1) I. 서 론 폴리스티렌은 스티렌 모노머의 부가중합(addition polymerization) 에 의하여 제조되어 지며, 중합방법에는 용액 또는 벌크 중합법 (solution or bulk polymeri-
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